oops in kernel ( 3.4.x -> 3.5rc )

[nicolas prochazka <prochazka.nicolas@xxxxxxxxx>]

Hello,
Since i 've updated our server from linux kernel 3.3.8 to linux kernel
3.4.6 or linux kernel 3.5rc7,
we can observe a lot of oops and big load  on system.

Example : Linux positronic836 3.5.0-rc7 #4 SMP Fri Jul 20 11:47:12 UTC
2012 x86_64 Intel(R) Xeon(R) CPU E5345 @ 2.33GHz GenuineIntel
GNU/Linux

Regards,
Nicolas Prochazka.

[ 2384.900061] BUG: unable to handle kernel paging request at 000000010000002f
[ 2384.900307] IP: [<ffffffff8115a250>] dup_fd+0x160/0x2e0
[ 2384.905492] PGD 4e9bab067 PUD 0
[ 2384.910010] Oops: 0002 [#4] SMP
[ 2384.910010] CPU 6
[ 2384.910010] Modules linked in: kvm_intel kvm
[ 2384.910010]
[ 2384.910010] Pid: 23838, comm: queue.sh Tainted: G      D W
3.5.0-rc7 #4 Dell Inc. PowerEdge M600/0MY736
[ 2384.910010] RIP: 0010:[<ffffffff8115a250>]  [<ffffffff8115a250>]
dup_fd+0x160/0x2e0
[ 2384.910010] RSP: 0018:ffff88049fef1d90  EFLAGS: 00010206
[ 2384.910010] RAX: 0000000000000038 RBX: ffff8806a0ac4580 RCX: 0000000000000007
[ 2384.910010] RDX: 00000000ffffffff RSI: 0000000000000800 RDI: ffff880658a85400
[ 2384.910010] RBP: ffff88049fef1df0 R08: 0000000000000020 R09: ffffffff81159fe4
[ 2384.910010] R10: ffffea0020495fd8 R11: 0000000000000000 R12: ffff8807f1eaa000
[ 2384.970401] R13: ffff880658a85380 R14: 0000000000000100 R15: ffff8807d8820000
[ 2384.970401] FS:  00007f169ffdb700(0000) GS:ffff88083fd80000(0000)
knlGS:0000000000000000
[ 2384.970401] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 2384.970401] CR2: 000000010000002f CR3: 000000059a96e000 CR4: 00000000000027e0
[ 2384.970401] DR0: 0000000000000001 DR1: 0000000000000002 DR2: 0000000000000001
[ 2384.970401] DR3: 000000000000000a DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 2384.970401] Process queue.sh (pid: 23838, threadinfo
ffff88049fef0000, task ffff8805d707a000)
[ 2384.970401] Stack:
[ 2384.970401]  ffff88049fef1da0 000000018102db49 0000000000000020
ffff88045da607c0
[ 2384.970401]  ffff8805321a7c88 ffff8805321a7d00 00007f169ffdb9d0
ffff8804cd075000
[ 2384.970401]  0000000000000000 0000000001200011 00007f169ffdb9d0
0000000000000000
[ 2384.970401] Call Trace:
[ 2384.970401]  [<ffffffff8104056c>] copy_process+0x93c/0x13d0
[ 2384.970401]  [<ffffffff81041154>] do_fork+0x54/0x360
[ 2384.970401]  [<ffffffff81ae8eae>] ? _raw_spin_lock+0xe/0x20
[ 2384.970401]  [<ffffffff81055c67>] ? __set_task_blocked+0x37/0x80
[ 2384.970401]  [<ffffffff8100c1b8>] sys_clone+0x28/0x30
[ 2384.970401]  [<ffffffff81ae9eb3>] stub_clone+0x13/0x20
[ 2384.970401]  [<ffffffff81ae9c29>] ? system_call_fastpath+0x16/0x1b
[ 2384.970401] Code: 8b 45 b0 49 8b 7d 10 48 8b 71 10 4c 89 c2 e8 a8
9c 23 00 45 85 f6 74 54 41 8d 46 ff 31 c9 48 8d 34 c5 08 00 00 00 31
c0 eb 15 90 <f0> 48 ff 42 30 49 89 14 04 ff c1 48 83 c0 08 48 39 f0 74
24 49
[ 2384.970401] RIP  [<ffffffff8115a250>] dup_fd+0x160/0x2e0
[ 2384.970401]  RSP <ffff88049fef1d90>
[ 2384.970401] CR2: 000000010000002f
[ 2385.131572] ---[ end trace 12628ad63724505e ]---
[ 2385.550858] device vmEtap18 left promiscuous mode
[ 2385.953882] device vmEtap19 left promiscuous mode
[ 2386.318553] device vmEtap20 left promiscuous mode
[ 2386.714127] device vmEtap21 left promiscuous mode
[ 2387.131308] device vmEtap22 left promiscuous mode
[ 2387.498609] device vmEtap23 left promiscuous mode
[ 2397.885344] BUG: unable to handle kernel paging request at 000000010000003b
[ 2397.885596] IP: [<ffffffff811a3654>] tid_fd_revalidate+0x84/0x1a0
[ 2397.885804] PGD 4ce59d067 PUD 0
[ 2397.885950] Oops: 0000 [#5] SMP
[ 2397.886097] CPU 3
[ 2397.886163] Modules linked in: kvm_intel kvm
[ 2397.886408]
[ 2397.886425] Pid: 25760, comm: netstat Tainted: G      D W
3.5.0-rc7 #4 Dell Inc. PowerEdge M600/0MY736
[ 2397.886747] RIP: 0010:[<ffffffff811a3654>]  [<ffffffff811a3654>]
tid_fd_revalidate+0x84/0x1a0
[ 2397.887019] RSP: 0018:ffff88040ca4bd78  EFLAGS: 00010206
[ 2397.887187] RAX: ffff8807f1f26ec0 RBX: ffff8807d918e928 RCX: 000000000000007d
[ 2397.887392] RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffff8807f1f26ec0
[ 2397.887596] RBP: ffff88040ca4bd98 R08: ffff88083fcd6b30 R09: ffffffff8119fef0
[ 2397.887801] R10: 0000000000000000 R11: 0000000000000202 R12: ffff8807d93cd3c0
[ 2397.891771] R13: ffff8807c1366000 R14: ffff8807cf615038 R15: ffff88040ca4be08
[ 2397.891771] FS:  00007f029b1b5700(0000) GS:ffff88083fcc0000(0000)
knlGS:0000000000000000
[ 2397.891771] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2397.891771] CR2: 000000010000003b CR3: 00000004d0fd9000 CR4: 00000000000007e0
[ 2397.891771] DR0: 0000000000000001 DR1: 0000000000000002 DR2: 0000000000000001
[ 2397.891771] DR3: 000000000000000a DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 2397.891771] Process netstat (pid: 25760, threadinfo
ffff88040ca4a000, task ffff88065897f000)
[ 2397.891771] Stack:
[ 2397.891771]  ffff8807d93cd3c0 0000000000000007 ffff8807d918e928
ffff8807db8db240
[ 2397.891771]  ffff88040ca4bdc8 ffffffff811a3880 ffffffffff0a0210
0000000000000001
[ 2397.963460]  ffff88040ca4be98 ffff8807d6dcb600 ffff88040ca4be48
ffffffff811a4cd6
[ 2397.963460] Call Trace:
[ 2397.963460]  [<ffffffff811a3880>] proc_fd_instantiate+0x80/0xa0
[ 2397.963460]  [<ffffffff811a4cd6>] proc_fill_cache+0x126/0x150
[ 2397.963460]  [<ffffffff811a3800>] ? proc_fdinfo_instantiate+0x90/0x90
[ 2397.963460]  [<ffffffff811505a0>] ? filldir64+0xe0/0xe0
[ 2397.963460]  [<ffffffff811a5006>] proc_readfd_common+0xf6/0x1c0
[ 2397.963460]  [<ffffffff811a3800>] ? proc_fdinfo_instantiate+0x90/0x90
[ 2397.963460]  [<ffffffff811505a0>] ? filldir64+0xe0/0xe0
[ 2397.963460]  [<ffffffff811a5105>] proc_readfd+0x15/0x20
[ 2397.963460]  [<ffffffff811507c0>] vfs_readdir+0xa0/0xc0
[ 2397.963460]  [<ffffffff811505a0>] ? filldir64+0xe0/0xe0
[ 2397.963460]  [<ffffffff8115096d>] sys_getdents+0x8d/0x100
[ 2397.963460]  [<ffffffff81ae9c29>] system_call_fastpath+0x16/0x1b
[ 2397.963460] Code: b8 00 00 00 48 8b 50 08 44 3b 32 0f 83 9e 00 00
00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2 0f 84 87 00 00
00 48 89 c7 <44> 8b 62 3c e8 13 29 ea ff 4c 89 ef e8 4b df ff ff 85 c0
0f 84
[ 2397.963460] RIP  [<ffffffff811a3654>] tid_fd_revalidate+0x84/0x1a0
[ 2397.963460]  RSP <ffff88040ca4bd78>
[ 2397.963460] CR2: 000000010000003b
[ 2397.970166] ---[ end trace 12628ad63724505f ]---
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